Emerson MPR15 Series, MPR25 user manual Filter, Fan cooling, Power shelf, Danger, Storage

74 Maintenance

Filter

If the unit operates in a dusty environment the optional fan filter is recommended. It must be inspected and replaced, or thoroughly cleaned, at least every 12 months.

CAUTION

Do not install a wet filter in the unit.

To remove the filter, simply unscrew it. Re-install it by reversing the operation.

Fan cooling

Visually inspect the intake of the airflow for any obstruction by foreign objects or excessive dust and dirt build-up. Open both the DC and AC breakers (toggle them to OFF) and remove the unit from the power shelf. Inspect the air outlet for obstruction by foreign objects. Visually inspect the air outlet of the enclosure or cabinet. If a problem is detected in the rectifier, contact your local Astec service facility. The unit must not be opened for on- site servicing.

DANGER

Do not attempt to access the inside of the unit with a tool or finger. Severe electrical shock could result.

Storage

The rectifier contains aluminum electrolytic capacitors. For this reason, the rectifier must be in operation. If not in operation, once a year, the equipment must be energized for at least two hours to maintain the electrolytic capacitors in working condition.

Power shelf

The rectifier shelf requires no maintenance.

UM5C06B / C ( 169-2071-500 ) P0711722 Standard 10.00 May 2001